549805312 has 72 divisors (see below), whose sum is σ = 1267574336. Its totient is φ = 233127936.

The previous prime is 549805303. The next prime is 549805339. The reversal of 549805312 is 213508945.

It is a super-2 number, since 2×549805312² = 604571762206834688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172243 + ... + 175405.

Almost surely, 2^549805312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549805312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633787168).

549805312 is an abundant number, since it is smaller than the sum of its proper divisors (717769024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549805312 is an equidigital number, since it uses as much as digits as its factorization.

549805312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283 (or 3269 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 549805312 is about 23447.9276696257. The cubic root of 549805312 is about 819.2245852403.

The spelling of 549805312 in words is "five hundred forty-nine million, eight hundred five thousand, three hundred twelve".